Wire-type spray material for a thermally sprayed layer having a pearlite, bainite, martensite structure

Patent metadata

Field	Value
Publication number	US-9546414-B2
Application number	US-201113980919-A
Country	US
Kind code	B2
Filing date	Dec 7, 2011
Priority date	Jan 26, 2011
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

A wire-form spray material, in particular for arc wire spraying, essentially comprising iron. The spray material is formed at least with carbon as a microalloy such that upon solidification of the spray material a fine pearlitic, bainitic, martensitic structure arises in which finely dispersed nitrides are present.

First claim

The invention claimed is:

1. A wire-form spray material ( 4 ) in the form of a solid wire base body, with an optional plating layer, wherein the solid wire base body is formed at least with carbon as a microalloy such that pearlite, bainite, and martensite form upon solidification of the spray material, and wherein the solid wire base body comprises the following alloy components:
carbon 0.28 wt % to 0.6 wt %,
silicon 0.6 wt % to 0.8 wt %,
manganese 1.0 wt % to 1.4 wt %,
chromium 0.05 wt % to 0.35 wt %,
copper 0.04 wt % to 0.15 wt %,
nitrogen 0.005 wt % to 0.03 wt %,

and optionally elective components selected from vanadium, nickel, molybdenum, phosphorus, sulfur, and aluminum, with the remainder iron and unavoidable impurities, based on a total weight of solid wire base body in each case.

2. The wire-form spray material ( 4 ) as in claim 1 , comprising vanadium with a fraction of up to 0.15 wt %, nickel with a fraction of up to 0.1 wt %, molybdenum with a fraction of up to 0.03 wt %; phosphorus, sulfur, and aluminum with a fraction of up to 0.01 wt %, based on a total weight in each case.

3. A wire-form spray material ( 4 ) wherein the spray material ( 4 ) is formed at least with carbon as a microalloy such that pearlite, bainite, and martensite form upon solidification of the spray material, and wherein the spray material comprises the following alloy components:
carbon 0.28 wt % to 0.6 wt %,
silicon 0.6 wt % to 0.8 wt %,
manganese 1.0 wt % to 1.4 wt %,
chromium 0.05 wt % to 0.35 wt %,
copper 0.04 wt % to 0.15 wt %,
nitrogen 0.005 wt % to 0.03 wt %,

wherein a surface of the spray material ( 4 ) is provided with a copper plating.

4. An iron-based thermal sprayed coating on a substrate, the iron-based thermal sprayed coating having a predominantly pearlitic/bainitic structure and comprising the following alloy components:
carbon 0.28 wt % to 0.6 wt %,
silicon 0.6 wt % to 0.8 wt %,
manganese 1.0 wt % to 1.4 w t%,
chromium 0.05 to 0.35 wt %,
copper 0.04 wt % to 0.15 wt %,
nitrogen 0.005 to 0.03 wt %,

and optionally components selected from vanadium, nickel, molybdenum, phosphorus, sulfur, and aluminum, with the remainder iron and unavoidable impurities, based on a total weight in each case.

5. The thermal sprayed coating as in claim 4 , wherein the substrate is an engine block of a reciprocating piston engine, and wherein the coating was sprayed in the inside of the engine block to form a contact layer.

Assignees

• Izquierdo Patrick
• Oezdeniz Eyuep Akin
• Daimler Ag

Inventors

• Izquierdo Patrick
• Oezdeniz Eyuep Akin

Classifications

• C22C38/22

  with molybdenum or tungsten · CPC title

• C22C38/20

  with copper · CPC title

• C22C38/24

  with vanadium · CPC title

• Y10T428/12972

  Containing 0.01-1.7% carbon [i.e., steel] · CPC title

• C23C4/131

  Wire arc spraying · CPC title