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金刚石在所有物质中硬度最高,在固体物质中导热率最高。其化学性能稳定,与其他物质几乎无亲和性。因此,金刚石很适合用作耐磨、滑动的零件以及工具等。但金刚石的使用形状往往受天然颗粒、单晶或聚晶烧结体的限制。因此,近年来在硬质合金或其他基体上合成金刚石薄膜涂层的技术受到高度重视。 金刚石涂层刀具特别适用有色金属、玻璃纤维强化塑料以及陶瓷等特殊材料。如切削AC4C(8％Si—Al)材料,使用金刚石涂层的硬质合金刀具,要比不涂金刚石的硬质合金刀具使用寿命提高12倍。使用金刚石薄膜涂层材料制成的扬声器及话筒的振动
Diamond is the hardest of all substances, and has the highest thermal conductivity in solids. Its chemical stability, and almost no affinity with other substances. Therefore, diamond is very suitable for wear-resistant, sliding parts and tools. However, the shape of diamond is often limited by the natural particles, single crystal or polycrystalline sintered body. Therefore, in recent years, the technology of synthesizing diamond thin film coatings on cemented carbide or other substrates is highly valued. Diamond coated tools are particularly suitable for non-ferrous metals, glass fiber reinforced plastics and ceramics and other special materials. When cutting AC4C (8% Si-Al), diamond-coated cemented carbide tools offer up to 12 times longer lifespan than diamond-free cemented carbide tools. Vibration using speakers and microphones made of diamond film coating material