公开(公告)号：US4752535A

公开(公告)日：1988-06-21

申请号：US916675

申请日：1986-09-10

Applicant: Ingard Kvernes

Inventor： Ingard Kvernes

IPC: B32B15/04 ,  B05D1/02 ,  B05D7/14 ,  B05D7/24 ,  C23C4/00 ,  C23C4/02 ,  C23C4/04 ,  C23C28/00 ,  F02F1/00 ,  B32B15/16 ,  B05D1/10

CPC classification number: C23C4/02 ,  F05C2201/021 ,  F05C2201/0448 ,  Y10S428/937 ,  Y10T428/12021 ,  Y10T428/12056 ,  Y10T428/12139 ,  Y10T428/12146 ,  Y10T428/12611 ,  Y10T428/12764

Abstract: Described are an aluminium-based article having a heat and corrosion protective coating, especially engine parts such as piston crown or cylinder head, and a method of preparing said article. The coating consists of an aluminium-based bonding layer, preferably having a thickness in the range 0.1-0.6 mm, and an outer top layer of stabilized or partially stabilized zirconium dioxide, preferably having a thickness in the range 0.5-2.5 mm, and optionally a cermet layer, comprising zirconium dioxide and an aluminium-based metal component, between the bonding layer and the outer zirconium dioxide top layer. The bonding layer is applied to the substrate by thermal spraying of a rapidly solidified powder, substantially consisting of 60-80% by weight of Al and 40-20% by weight of Si, the particles of the powder having a frozen unstable micro-structure. The cermet layer desirably is a layer consisting of zirconium dioxide and an aluminium-based alloy, the metal content of the cermet layer decreasing substantially uniformly in the direction towards the outer zirconium dioxide top layer. The cermet layer preferably has a thickness in the range 0.2-0.6 mm. Also the cermet and zirconium oxide layers are deposited by thermal spraying.

Abstract translation: PCT No.PCT / NO86 / 00007 Sec。 371日期：1986年9月10日 102（e）1986年9月10日PCT PCT 1月29日，PCT PCT。 出版物WO86 / 04615 日期为1986年8月14日。描述了具有耐热腐蚀保护涂层的铝基制品，特别是发动机部件，例如活塞头或气缸盖，以及制备所述制品的方法。 该涂层由优选具有0.1-0.6mm厚度的铝基粘合层和稳定的或部分稳定的二氧化锆的外顶层构成，优选地具有在0.5-2.5mm范围内的厚度，以及任选地 金属陶瓷层，其包含二氧化锆和铝基金属组分，在所述粘合层和外部二氧化锆顶层之间。 通过热喷涂快速固化的粉末将粘合层施加到基底上，其基本上由Al含量为60-80％（重量）和40-20％（重量）的Si组成，粉末颗粒具有冷冻的不稳定微结构 。 金属陶瓷层期望地是由二氧化锆和铝基合金构成的层，金属陶瓷层的金属含量在朝向外部二氧化锆顶层的方向上大致均匀地减小。 金属陶瓷层优选具有0.2-0.6mm范围内的厚度。 此外，金属陶瓷和氧化锆层通过热喷涂沉积。