Ashkinazi E.E., Sedov V.S., Sovyk D., Khomich A.A., Bolshakov A.P., Ryzhkov S.G., Khomich A.V., Vinogradov D.V., Ralchenko V.G., Konov V.I. Plateholder design for deposition of uniform diamond coatings on WC-Co substrates by microwave plasma CVD for efficient turning application. Diamond & Related Materials , 2017 , 75. С. 169-175. ISSN 0925-9635
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Текст
10.1016@j.diamond.2017.04.011.pdf Загрузить (1MB) | Предварительный просмотр |
Аннотация
Polycrystalline diamond coatings have been grown on cemented carbide WC-6% Co substrates with different aspect ratios by microwave plasma CVD in CH4/H2 gas mixtures. Special plateholder with holes for group growth has been used to protect the edges of the substrates from non-uniform heating due to the plasma edge effect. The difference in heights Δh of the substrates and plateholder, and its influence on the diamond film mean grain size, growth rate, phase composition and stress was investigated. Diamond growth rate of 0.3–1 μm/h and compressive stress of 2.2–2.5 GPa, respectively were determined in the optimal Δh region. The substrate temperature range of 740–760 °C, within which uniform diamond films are produced with good adhesion, is determined. The diamond-coated samples produced at optimized process conditions exhibited a reduction of cutting force and wear resistance by a factor of two, and increase of cutting path length up to 8150 m or by 4.3 times upon turning А390 Al-Si alloy as compared to performance of uncoated tools.
| Тип объекта: | Статья |
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| Авторы на русском. ОБЯЗАТЕЛЬНО ДЛЯ АНГЛОЯЗЫЧНЫХ ПУБЛИКАЦИЙ!: | Ашкинази Е.Е., Седов В.С., Совык Д., Хомич А.А., Большаков А.П., Рыжков С.Г., Хомич А.В., Виногралдов Д.В., Ральченко В.Г., Конов В.И. |
| Подразделения (можно выбрать несколько, удерживая Ctrl): | 218 лаб. химических методов технологии и анализа |
| URI: | http://cplire.ru:8080/id/eprint/3710 |
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