公开(公告)号：US06326057B1

公开(公告)日：2001-12-04

申请号：US09474549

申请日：1999-12-29

申请人： Nripendra N. Das ,  Thomas E. Mantkowski ,  Jackie L. King ,  Floyd A. Swigert ,  W. Michael Gmerek, Jr.

发明人： Nripendra N. Das ,  Thomas E. Mantkowski ,  Jackie L. King ,  Floyd A. Swigert ,  W. Michael Gmerek, Jr.

IPC分类号： C23C1600

摘要： A process for forming a diffusion aluminide coating on an article, such as a component for a gas turbine engine. The process is a vapor phase process that generally entails placing the article in a coating chamber containing an aluminum donor material, without any halide carrier or inert filler present. The aluminum donor material consists essentially of about 20 to about 70 weight percent aluminum, with the balance being chromium or cobalt. While the article is held out of contact with the donor material, coating is initiated in an inert or reducing atmosphere by heating the article and the donor material to vaporize the aluminum constituent of the donor material, which then condenses on the surface of the article and diffuses into the surface to form a diffusion aluminide coating on the article.

摘要翻译： 用于在诸如燃气涡轮发动机的部件的物品上形成扩散铝化物涂层的方法。 该方法是气相法，其通常需要将物品置于包含铝供体材料的涂层室中，而不存在任何卤化物载体或惰性填料。 铝供体材料基本上由约20至约70重量％的铝组成，余量为铬或钴。 虽然制品与供体材料不接触，但是通过加热制品和供体材料来在惰性或还原性气氛中引发涂层，以蒸发供体材料的铝组分，然后将其冷凝在制品的表面上， 扩散到表面以在制品上形成扩散的铝化物涂层。

公开(公告)号：US06306458B1

公开(公告)日：2001-10-23

申请号：US09474548

申请日：1999-12-29

申请人： Thomas E. Mantkowski ,  Nripendra N. Das ,  Keith H. Betscher ,  Raymond W. Heidorn ,  Jackie L. King ,  Floyd A. Swigert

发明人： Thomas E. Mantkowski ,  Nripendra N. Das ,  Keith H. Betscher ,  Raymond W. Heidorn ,  Jackie L. King ,  Floyd A. Swigert

IPC分类号： B32B3500

CPC分类号： C23C8/06

摘要： A process for reclaiming aluminum alloy donor from a vapor phase deposition process used to form a diffusion aluminide coating on a component, such as the high-temperature superalloy components of gas turbine engines. The process generally entails recycling a particulate aluminum alloy donor material that, as a result of having been used as the donor material for depositing a diffusion aluminide coating on an article by vapor phase deposition, particles of the donor material comprise an aluminum alloy core encased in an aluminum-depleted shell. The process generally entails tumbling the donor material in a manner that removes the aluminum-depleted shell, followed by sieving the donor material to remove shell fragments and undersized particles.

摘要翻译： 用于从气相沉积工艺回收铝合金供体的方法，用于在诸如燃气涡轮发动机的高温超合金部件的组分上形成扩散铝化物涂层。 该方法通常需要循环使用颗粒状铝合金供体材料，该材料由于已被用作通过气相沉积在制品上沉积扩散铝化物涂层的供体材料的结果，供体材料的颗粒包含铝合金芯 一个铝耗尽的壳。 该方法通常需要以去除贫铝壳的方式翻转供体材料，然后筛选供体材料以除去壳碎片和尺寸过小的颗粒。