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这是神户制钢公司开发的一种涂层刀具。该公司曾在1990年推出一种miracle钻头(加工钢用的硬质合金钻头),其涂层称作miracle涂层,颜色与一般TiN涂层(金黄色)不同,呈兰黑色,与TiN涂层相比,具有如下特点:①压痕试验表明,miracle涂层与硬质合金基体的结合强度明显高于TiN涂层;②TiN涂层在620℃时,开始氧化,而新涂层在840℃时仍保持正常,具有很高的抗氧化性能;③miracle涂层的硬度为HV2700,约为TiN涂层的1.5倍,因而具有极好的耐磨性。
This is a coated tool developed by Kobe Steel. The company introduced a miracle drill bit (carbide drill bit for steel processing) in 1990. Its coating is called miracle coating. Its color is different from the general TiN coating (golden yellow) Compared with the layer, has the following characteristics: ① indentation test shows that, miracle coating and cemented carbide substrate bonding strength was significantly higher than TiN; ② TiN coating at 620 ℃, the oxidation began, while the new coating at 840 ℃ Still remain normal, with high oxidation resistance; ③ miracle coating hardness of HV2700, about 1.5 times the TiN coating, which has excellent wear resistance.