Abstract: Provided are an alloy powder having excellent environmental resistance even in an environment where corrosion and wear are active simultaneously, and an alloy coating using the powder. A Ni—Fe base alloy powder comprising Cr of 15% by mass or more and 35% by mass or less, Fe of 10% by mass or more and 50% by mass or less, Mo of 0% by mass or more and 5% by mass or less, Si of 0.3% by mass or more and 2% by mass or less, C of 0.3% by mass or more and 0.9% by mass or less, B of 4% by mass or more and 7% by mass or less, and a balance of Ni and incidental impurities.

Abstract: There are provided a Ni-based thermal spraying alloy powder having excellent corrosion resistance and erosion-corrosion resistance even in an environment in which corrosion acts or corrosion and erosion act simultaneously, and a method for manufacturing an alloy coating. A Ni-based thermal spraying alloy powder comprising Cr: 15 wt % or more and 25 wt % or less, Mo: 0 wt % or more and 5 wt % or less, Si: 0.5 wt % or more and less than 2 wt %, Fe: 5 wt % or less, C: 0.3 wt % or more and 0.7 wt % or less, and B: 4 wt % or more and 7 wt % or less, with the balance being Ni and incidental impurities.

Abstract: A method of fusing an alloy-based material with a coating layer using a thermal spray process. The method includes determining a predetermined energization frequency of a high-frequency power supply unit based on a diffused area thickness (T1) and a non-diffused area thickness (T2) of the alloy-based material, inductively heating the alloy-based material and the coating layer to reach a predetermined temperature at the predetermined energization frequency of the high-frequency power supply unit, selectively heating the alloy-based material at the predetermined energization frequency within a penetration depth range of a total thickness (D2) of the alloy-based material to suppress an austenite transformation of at least a portion of the alloy-based material, and fusing the selectively heated alloy-based material with the coating layer by suppressing the austenite transformation of at least the portion of the alloy-based material.

Abstract: Provided are an alloy powder having excellent environmental resistance even in an environment where corrosion and wear are active simultaneously, and an alloy coating using the powder. A Ni—Fe base alloy powder comprising Cr of 15% by mass or more and 35% by mass or less, Fe of 10% by mass or more and 50% by mass or less, Mo of 0% by mass or more and 5% by mass or less, Si of 0.3% by mass or more and 2% by mass or less, C of 0.3% by mass or more and 0.9% by mass or less, B of 4% by mass or more and 7% by mass or less, and a balance of Ni and incidental impurities.

Abstract: There are provided a Ni-based thermal spraying alloy powder having excellent corrosion resistance and erosion-corrosion resistance even in an environment in which corrosion acts or corrosion and erosion act simultaneously, and a method for manufacturing an alloy coating. A Ni-based thermal spraying alloy powder comprising Cr: 15 wt % or more and 25 wt % or less, Mo: 0 wt % or more and 5 wt % or less, Si: 0.5 wt % or more and less than 2 wt %, Fe: 5 wt % or less, C: 0.3 wt % or more and 0.7 wt % or less, and B: 4 wt % or more and 7 wt % or less, with the balance being Ni and incidental impurities.

Abstract: A superheated steam generator includes an introduction section for introducing saturated steam into hollow pipe members arranged as steam flow passages and acting as inductively heated elements, and a discharge section for discharging superheated steam from the flow passages, wherein a turbulence generator is disposed in each of the steam flow passages to accelerate heat transfer to the steam in the pipe members, wherein the turbulence generator is a zigzag bent member disposed in the steam flow passage, and a zigzag bending pitch of the bent member changes from rough to minute from the introduction section to the discharge section.

Abstract: [Object] To improve an overall heat transfer efficiency of a heating element and steam and a heating efficiency of the stream by making a distribution of input heat non-uniform by executing a less expensive improvement such as a change of disposition of an induction heating member. [Solving Means] In a superheated steam generator 30 including an introduction section 11 for introducing saturated steam 5, a heating section 12 for heating the saturated steam 5 and making it to superheated steam 6, a discharge section 16 for discharging the superheated steam 6, and an induction coil 31 wound around a heating pipe member 13 through insulators 18 in the heating section 12, the induction coil 31 is wound rough near to the introduction section 11 and minute near to the discharge section 16.