Diamond film wafers with different thickness were prepared by high power DC arc plasma jet CVD method.

采用高功率直流电弧等离子体cvd工艺制备了不同厚度的无裂纹自支撑金刚石厚膜。

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Increase the compression degree can make arc of high temperature plasma jet extended, form more uniform high temperature area, and increase the speed of the jet, can reduce the width of the poor.

增加电弧的压缩程度可以使高温等离子射流延长，形成更为均匀的高温区域，同时加大射流的速度，可以减小切口上下的宽度差。

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Because the hydrogen can significantly improve the arc voltage, make hydrogen plasma jet has high enthalpy, when mixed with argon plasma jet, the use of cutting ability is greatly increased.

由于氢气能显著提高电弧电压，使氢等离子射流有很高的焓值，当与氩气混合使用时，其等离子射流的切割能力大大提高。

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