【摘 要】
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Metal cutting represents a certain category of material removal processes that play a central role in obtaining qualified machine parts and components for various industries. Due to the severe conditi
【机 构】
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College of Mechanical Engineering, North China University of Science and Technology, Tangshan 063000
【出 处】
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第十一届全国表面工程大会暨第八届全国青年表面工程学术会议
论文部分内容阅读
Metal cutting represents a certain category of material removal processes that play a central role in obtaining qualified machine parts and components for various industries. Due to the severe conditions encountered by a cutting tool during machining, the cutting materials are required to possess high hardness, high oxidation temperature, and high corrosion resistance to combat wear during cutting for longer service life of the cutting tools and better surface integrity of the machined parts. In the past a few decades, nano-structured hard thin films have attracted intensive attentions due to their high hardness and wear-resistance which attribute to both the hard phases and nano size-effect. Various coatings for cutting tools have been developed which lead to tool working surface with super-high surface hardness, high resistance to abrasion, and elevated surface oxidation temperatures. Among these coatings are Titanium Nitride (TiN), Titanium Carbon Nitride (TiCN), and Titanium Alumin m Nitride (TiAlN). As a type of most commonly used cutting tool materials, cemented carbides have long been taking a central position in machining a wide range of engineering materials. They have received much more attention in surface coating as substrates than other cutting materials. This paper reviews the recent development of TiAlN nano-structured hard coating on cemented carbide substrates. Emphasizes are given to the fabrication, characterization, wear-resistance, and tool life of the coating for various machining applications. The influence of the post-treatments such as annealing has been discussed in this review as well.
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