| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plasma thermal spraying apparatus capable of forming a thermally sprayed film having reduced variation and a method for manufacturing a gas sensor capable of forming an electrode protective layer having reduced variation on a measuring electrode by using the plasma thermal spraying apparatus. <P>SOLUTION: The plasma thermal spraying apparatus 100 is equipped with a thermal spraying gun 101 which generates an arc between a pair of discharge electrodes, puts a supplied working gas into a plasma state and ejects a molten substance together with a plasma jet, a power source section 121, and a power source cable 131 which connects these. In addition thereto, the apparatus is equipped with a voltage monitor section 141 which is connected to a voltage measuring point 105 of the thermal spraying gun 101 and detects the voltage value actually applied between the discharge electrodes of the thermal spraying gun 101, and a power source control section 151 which instructs the current value to be supplied to the thermal spraying gun 101 for the power source section 121 based on the voltage value. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
