A method of control of chemico-thermal treatment of workpieces in a glow discharge comprising the steps of measuring the workpiece temperature, its rate of change and frequency of arc occurrence, comparing the measured quantities with their predetermined values, producing the corresponding error signals,...http://www.google.de/patents/US4396478?utm_source=gb-gplus-sharePatent US4396478 - Method of control of chemico-thermal treatment of workpieces in glow discharge and a device for carrying out the method
