Due to the low surface hardness,transparent plastic is easy to be scratched in use, which makes the loss of operation life and limits extended application.

Investigation on the microstructure and bending strength of welded joints of hard alloy YG30 and steel 45;

Study on laser cladding hard alloy with electromagnetic stirring;

Study on vacuum brazing process to join steel SN2025 with hard alloy;

Study on the coated cemented carbide with gradient structure by a special sintering technology;

〗Frition and wear property of CNx deposition on cemented carbide;

Finite element analysis on carbide anvil of BELT device;

A study of efficiency for machining carbide with different electrode material in EDM;

A Carbide Forming Milling Cutter with New Structure and Its Design Procedure;

Development for hard coatings by physical vapour deposition technology;

A two-step penetration method for the correct measurement of the mechanical properties of hard coatings;

Recent progress and the applications of hard coatings such as TiN,CrN and TiAlN et al.

The results indicate that proper duty ratio of magnetic field can increase the amount of hardening phase in overlay deposit, control the growth direction of hardening phase and improve the hardness and wear res.

The results show that the microstructure and hardness of surfacing welding layer metal are influenced not only by the kind of electrode and welding procedure parameters, but also by the type, performance, quantity and distribution of hardening phase.