Sol-gel technology is an appealing preparation method.Using the method,fine and high purity powder can be prepared,higher binding force than CVD and PVD coatings can be achieved.

• 溶胶-凝胶法是一种有发展潜力的制备方法,采用溶胶-凝胶法可获得纯度高、粒度细的优质硬质合金粉末,可解决传统的CVD、PVD等涂层结合力不高的问题。