Diamond applications, How much do you know IV

2018-02-03

14. CVD diamond used for the new EDM electrode, Electrode material performance will affect it's EDM performance, such as material removal rate, tools wear rate, the workpiece surface quality, therefore, it is very important for EDM to choice electrode materials correctly.  

K / Suzuki et al. Studied the use of conductive CVD diamond thick film (0.5 mm) as the electrode material for EDM. This CVD diamond has conductivity due to dope boron, its resistance is small, high thermal conductivity and strong adsorption capacity for the carbon precipitated in the oil working medium during EDM processing. Tests show that under certain processing conditions, CVD diamond electrodes achieve very high material removal rates with almost zero electrode loss, especially when processed at high current densities that can not use Cu or graphite electrodes.

15. Artificial single crystal diamond used in laser micro-hole technology

Artificial single crystal diamond is the ideal material for integrated circuit lead mold. Research and development of single crystal diamond integrated circuit precision lead mold is an important task for scientists all over the world.

Traditional laser CNC drilling model is difficult to achieve accurate aperture. the new numerical control model is used to laser drill the lead mold of the integrated circuit. The accuracy of the Hole type is greatly improved, and the aperture of 3.5μm can be obtained.

16. Cover the tantalum spinneret surface with diamond film

Spinneret is a key component of chemical fiber textile, its performance will affect the quality of the spinning, productivity, cost and many other economic indicators. Spinneret used in chemical fiber industry used to be gold-platinum alloy in the past, the manufacturing cost is too high. Now people try to use relatively inexpensive tantalum instead of gold-platinum alloy to make spinneret. Tantalum spinnerets face to two problems below:

(1) to increase its hardness, to prevent the spinneret caused by deformation scrapped;

(2) to improve its corrosion resistance of alkaline conditions.

Carbonization of the tantalum substrate helps to improve the adhesion of the diamond film to its surface. The finished diamond film tantalum spinneret has the same spinnability and spinning quality reached or exceeded the conventional spinneret. Can totally replace the gold-platinum spinneret, thus greatly reducing production costs, while reducing the diamond particle size of the spinneret surface hardness and spinning quality has a favorable impact.