Corrosion-Resistant Nickel Alloy Synthesis

Example 3

The present invention provides a corrosion-resistant nickel alloy, which comprises the following components in percentage by mass: 5.16% of B, 6.13% of W, 27.79% of Cr, 12.92% of Al, and the balance of Ni and inevitable impurities.

The method for preparing the corrosion-resistant nickel alloy comprises the following steps:

• • mixing boron powder, tungsten powder, chromium sheets, aluminum sheets and nickel powder with a purity of 99.9%, then adding the mixture into a vacuum suspension smelting furnace; firstly performing vacuumization to 6×10⁻² Pa, then introducing high-purity argon gas, performing heating to a temperature of 1752° C. from room temperature within 28 min, adjusting a heating power to 100 kW, and performing smelting for 6 min; increasing the heating power to 120 kW, and performing the smelting for 5 min; then increasing the heating power to 140 kW, and performing the smelting for 5 min; and adjusting the heating power to 120 kW and performing the refining for 9 min under thermal insulation, reducing the temperature to 900° C. at 80° C./min after the refining is completed and then reducing the temperature to 66° C. at 43° C./min, and repeating the smelting and refining for 3 times to obtain the corrosion-resistant nickel alloy.