초록 ▼

A process for forming a boron-containing coating on the internal surface of a zirconium or zirconium alloy hollow tube by heating the internal surface to a temperature of between 200°-450°C. and passing through the tube a mixture of a volatilized boron compound in helium or argon, such that the boro

A process for forming a boron-containing coating on the internal surface of a zirconium or zirconium alloy hollow tube by heating the internal surface to a temperature of between 200°-450°C. and passing through the tube a mixture of a volatilized boron compound in helium or argon, such that the boron compound decomposes to form an integral boron containing coating on the internal surface.

대표청구항 ▼

A process for forming (a) an integral, adherent boron coating on the internal surface of a hollow tube of a metal, selected from zirconium and a zirconium alloy for use in a nuclear reactor component comprising: heating the internal surface of the hollow tube to be coated to an elevated temperature

A process for forming (a) an integral, adherent boron coating on the internal surface of a hollow tube of a metal, selected from zirconium and a zirconium alloy for use in a nuclear reactor component comprising: heating the internal surface of the hollow tube to be coated to an elevated temperature of between about 200°-450°C., said internal surface being in an active state; and passing a mixture of a volatilized boron compound in a carrier gas, selected from the group consisting of helium and argon, through the heated tube, the volatilized boron compound selected from the group consisting of boron compounds which will decompose at said elevated temperature, whereby the boron compound is heated by said internal surface of the tube, decomposes, and a boron coating is deposited on said internal surface.