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Rapid Polishing Method and Process for Silicon Carbide Wafers Using Diamond Polishing Paste
November 11, 2025
Silicon carbide (SiC) material, recognized as a third-generation semiconductor for manufacturing power semiconductor devices, possesses excellent physical and chemical properties such as high thermal conductivity, high breakdown field strength, wide bandgap, high electron saturation drift velocity, along with resistance to high temperatures and radiation, and good chemical stability. However, due to its extreme hardness (Mohs hardness of 9.2) and strong chemical stability, SiC presents significant challenges in both the grinding and polishing processes. To shorten the polishing time of the final step, namely chemical mechanical polishing (CMP), it is necessary to minimize the surface damage layer and reduce the roughness of the wafer. Traditional mechanical grinding or polishing employs diamond slurry. Under appropriate pressure and with the high-speed rotation of a metal grinding disc or a pad attached to a polishing platen, the surface of the SiC wafer is ground or polished. However, this approach faces a dilemma: pursuing a high material removal rate leads to a larger damage layer and higher surface roughness, which is detrimental to subsequent CMP; conversely, achieving a low damage layer and low surface roughness requires multiple process steps and increased processing time. To address the aforementioned technical challenges, this paper provides a rapid polishing...
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Huanghe Whirlwind Successfully Passed Review for National Manufacturing Single Champion Enterprise
November 04, 2025
Henan Huanghe Whirlwind Co., Ltd. has successfully passed the review for the national sixth batch of manufacturing single champion enterprises, further consolidating its technological leadership and industry influence in the field of superhard materials. In 2021, Huanghe Whirlwind was recognized as a sixth-batch manufacturing single champion enterprise for its “pre-alloyed powder for diamond tools” project. In accordance with the unified deployment of the Ministry of Industry and Information Technology, the Henan Provincial Department of Industry and Information Technology conducted a review and public announcement for the third and sixth batches of manufacturing single champion enterprises in Henan Province from October 28 to November 3, 2025. Huanghe Whirlwind actively prepared and successfully passed the review as required. Since 2006, Huanghe Whirlwind has continuously dedicated efforts to the research, development, and production of pre-alloyed powder for diamond tools. Collaborating with multiple domestic research institutions and universities, the company focused on core water atomization system technology and successfully developed a process for producing pre-alloyed powder via water atomization. This process effectively addresses key technical challenges such as high oxygen content in metal powders, insufficient apparent density, and weak matrix holding force on diamonds. It has achieved a leap in the comprehensive performance of...
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Forging Brilliance: Huanghe Whirlwind and the Science of HPHT Rough Diamonds
October 28, 2025
In the world of advanced materials and gemology, Huanghe Whirlwind (Henan Huanghe Whirlwind Co., Ltd.) stands as a titan, particularly for its pioneering role in the production of High-Pressure High-Temperature (HPHT) rough diamonds. As a leading force in China’s industrial and synthetic diamond sector, the company has mastered the complex science of creating diamonds that are physically, chemically, and optically identical to their natural counterparts, but born from cutting-edge technology. An HPHT rough diamond from Huanghe Whirlwind begins its journey not in the earth’s mantle, but in a meticulously engineered press. The process involves placing a diamond seed into a capsule with a pure carbon source and a metal catalyst. This capsule is then subjected to extreme conditions—pressures over 5 GPa (equivalent to being 150 kilometers underground) and temperatures exceeding 1400°C. In this controlled environment, the carbon melts and crystallizes onto the seed, atom by atom, forming a genuine diamond crystal. The “rough” diamonds produced by this method are distinctive. They often exhibit well-defined geometric forms, commonly cubo-octahedral shapes, and can have a characteristic metallic sheen on their surfaces from the metal catalyst used in the growth process. This sets them apart from the typically octahedral shapes of many natural...
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Diamond Powder: Grinding and Polishing Materials
October 23, 2025
Diamond powder is classified by particle size into nanodiamond, sub-micron diamond, and diamond micropowder. It is also categorized by morphology into spherical diamond, flake diamond, and irregularly shaped diamond. Based on crystal structure, it is divided into single crystal diamond and polycrystalline diamond. Diamond has many applications; this article primarily introduces its use in precision grinding and polishing materials. Nanodiamond is a nanoscale diamond structural material composed of carbon atoms, possessing many unique physical and chemical properties. It exhibits extremely high hardness and excellent grinding performance. As one of the hardest materials in the world, with a Mohs hardness of approximately 10, it far surpasses most other materials. This means nanodiamond has outstanding wear and corrosion resistance, maintaining its structural stability under extreme conditions. It also has an extremely low coefficient of friction and high grinding capability, making it suitable for efficient polishing and grinding applications. Nanodiamond particles can scrape target surfaces with very sharp edge angles, rapidly removing micro-defects, contaminants, and unevenness from material surfaces. The particle size of diamond is controllable, typically ranging from a few nanometers to several tens of micrometers, and can be precisely regulated through synthesis methods. This controllability allows diamond powder to provide customized performance and...
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A Guide to Selecting Diamond Micron Powder: Precision in Every Particle
October 15, 2025
In the world of high-precision manufacturing, research, and finishing, the tools used must be as exacting as the tasks themselves. Among the most critical of these tools is diamond micron powder, a synthetic material consisting of precisely sized diamond particles. Far from a one-size-fits-all product, selecting the correct diamond powder is a nuanced process that directly dictates the success of an application, whether it’s creating a flawless optical lens or polishing a sophisticated semiconductor wafer. The selection process hinges on four fundamental characteristics: particle size, shape, concentration, and quality. Particle Size and Distribution: The Heart of Precision The “micron” in diamond micron powder refers to the particle size, with one micron equaling one-millionth of a meter. Sizes typically range from sub-micron (less than 1µm) for super-fine polishing up to 50-60µm for more aggressive lapping. However, the single most important factor is not just the average size, but the size distribution. A high-quality powder has a tight, mono-dispersed distribution, meaning nearly all particles are the same size. This uniformity prevents larger, rogue particles from creating deep scratches, ensuring a consistent and predictable surface finish. Loose distributions can lead to inconsistent material removal and poor surface quality. Particle Shape: Dictating the Cutting...
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Huanghe Whirlwind Will Attend Canton Fair 2025
September 29, 2025
Huanghe Whirlwind, a leading name in the manufacturing and industrial sector, has announced its participation in the prestigious 138th China Import and Export Fair (Canton Fair) 2025. The company will be exhibiting its latest products and technological advancements at Booth 13.1F31 from October 15th to 19th. This highly anticipated appearance is expected to draw significant attention from international buyers and industry partners seeking cutting-edge industrial solutions. The Canton Fair, held biannually in Guangzhou, is China’s largest comprehensive international trade fair and a critical barometer for global trade trends. For decades, it has served as a primary gateway for international businesses to connect with high-quality Chinese manufacturers. Huanghe Whirlwind’s strategic decision to occupy a prominent booth underscores its commitment to expanding its global footprint and reinforcing its position as an industry innovator. At Booth 13.1F31, visitors will be granted an immersive experience into Huanghe Whirlwind’s world of engineering excellence. The exhibit is designed to highlight the company’s newest line of products, which are renowned for their durability, precision, and technological sophistication. The company plans to feature live demonstrations, allowing attendees to witness firsthand the superior performance and innovative features that set their equipment apart in a competitive global market. The Canton Fair...
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The Future is Brilliant: An Introduction to Lab-Grown Diamond Jewelry
September 25, 2025
For centuries, the allure of a diamond has been undeniable. Symbolizing eternal love, commitment, and luxury, these precious gems have been coveted across generations. However, a remarkable shift is occurring in the world of fine jewelry, driven by innovation and a new consumer consciousness. Enter lab-grown diamond jewelry: a brilliant fusion of cutting-edge science, stunning beauty, and accessible luxury that is redefining the industry. At its core, a lab-grown diamond is a diamond in every sense of the word—chemically, physically, and optically identical to its mined counterpart. The key difference lies not in its composition, but in its origin. Instead of being formed over billions of years deep within the Earth, these diamonds are created in a controlled laboratory environment using advanced technological processes that replicate the natural conditions of extreme heat and pressure. The result is a genuine diamond with the same sparkle, fire, and scintillation that has captivated us for ages. The benefits of choosing a lab-grown diamond are compelling. The most significant advantage for many is the value. Lab-grown diamonds typically cost 0-50% less than mined diamonds of comparable size and quality. This accessibility allows couples to invest in a larger or higher-quality stone without compromising their...
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Unleashing Precision and Power: The Advantages of Huanghe Whirlwind Synthetic Diamond Powder
September 12, 2025
In the world of advanced manufacturing and high-precision engineering, the tools and materials used can make the difference between mediocre and exceptional results. Among these critical materials, synthetic diamond powder stands out as a superstar, and Huanghe Whirlwind has established itself as a leading global force in its production. Their diamond powder is not merely an abrasive; it is a meticulously engineered product designed to deliver unparalleled performance across a vast array of industries. The advantages of choosing Huanghe Whirlwind’s synthetic diamond powder are clear and compelling. First and foremost is the product’s exceptional hardness and unmatched wear resistance. As the hardest known material, synthetic diamond effortlessly grinds, polishes, and cuts through the most challenging substances, including tungsten carbide, advanced ceramics, glass, and gemstones. Huanghe Whirlwind’s powders are engineered for consistency, meaning each micron-sized particle maintains this extreme durability, leading to longer life in grinding wheels, saw blades, and drill bits. This translates directly into reduced downtime for tool changes and lower operational costs over time. Furthermore, Huanghe Whirlwind excels in providing superior particle size control and purity. Through advanced manufacturing and rigorous classification processes, they ensure their diamond powders feature a narrow, consistent particle distribution. This is critical for...
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