PT86683A - Processo para a proteccao de aco contra a corrosao - Google Patents

Processo para a proteccao de aco contra a corrosao

Info

Publication number: PT86683A
Authority: PT; Portugal
Prior art keywords: chromo; sulphuric acid; heating; protection; against corrosion
Prior art date: 1988-02-02

Application number

PT8668388A

Other languages

English (en)

Other versions

PT86683B (pt

Inventor

Maria Joao Pedroso Carmesim

Original Assignee

Nac De Engenharia E Tec Ind La

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1988-02-02

Filing date

1988-02-02

Publication date

1989-10-04

1988-02-02 Application filed by Nac De Engenharia E Tec Ind La filed Critical Nac De Engenharia E Tec Ind La

1988-02-02 Priority to PT8668388A priority Critical patent/PT86683B/pt

1989-10-04 Publication of PT86683A publication Critical patent/PT86683A/pt

1993-09-30 Publication of PT86683B publication Critical patent/PT86683B/pt

Links

239000001117 sulphuric acid Substances 0.000 title abstract 2
229910000831 Steel Inorganic materials 0.000 title 1
230000007797 corrosion Effects 0.000 title 1
238000005260 corrosion Methods 0.000 title 1
238000010438 heat treatment Methods 0.000 title 1
239000010959 steel Substances 0.000 title 1
WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 abstract 1
239000011248 coating agent Substances 0.000 abstract 1
238000000576 coating method Methods 0.000 abstract 1
239000007789 gas Substances 0.000 abstract 1
238000000034 method Methods 0.000 abstract 1
229910001220 stainless steel Inorganic materials 0.000 abstract 1
239000010935 stainless steel Substances 0.000 abstract 1
238000007669 thermal treatment Methods 0.000 abstract 1

Landscapes

Chemical Treatment Of Metals (AREA)

PT8668388A 1988-02-02 1988-02-02 Processo para a proteccao de aco contra a corrosao PT86683B (pt)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
PT8668388A PT86683B (pt)	1988-02-02	1988-02-02	Processo para a proteccao de aco contra a corrosao

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
PT8668388A PT86683B (pt)	1988-02-02	1988-02-02	Processo para a proteccao de aco contra a corrosao

Publications (2)

Publication Number	Publication Date
PT86683A true PT86683A (pt)	1989-10-04
PT86683B PT86683B (pt)	1993-09-30

Family

ID=20084167

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
PT8668388A PT86683B (pt)	1988-02-02	1988-02-02	Processo para a proteccao de aco contra a corrosao

Country Status (1)

Country	Link
PT (1)	PT86683B (pt)

1988
- 1988-02-02 PT PT8668388A patent/PT86683B/pt not_active IP Right Cessation

Also Published As

Publication number	Publication date
PT86683B (pt)	1993-09-30

Similar Documents

Publication	Publication Date	Title
JPS52152814A (en)	1977-12-19	Thermo-mechanical treatment of seamless steel pipe
JPS54145335A (en)	1979-11-13	Surface reforming of metal molding
PT86683A (pt)	1989-10-04	Processo para a proteccao de aco contra a corrosao
JPS6455366A (en)	1989-03-02	Heat treatment for heat-transfer pipe
JPS6447880A (en)	1989-02-22	Stainless steel having ceramics layer on surface
JPS6487760A (en)	1989-03-31	Stainless steel member for semiconductor producing device
Staines et al.	1984	Surface hardening of stainless steels by plasma nitriding techniques
Fan et al.	1988	Plasma Ni--Cr Surface Alloying for A 3 Steel Sheet
EP0365687A4 (en)	1991-01-09	Steel sheet having dense ceramic coating with excellent adhesion,smoothness and corrosion resistance and process for its production
RO95235A2 (ro)	1989-05-30	Procedeu de fabricare a tablei placate prin explozie
Burakowski et al.	1985	Influence of the Nitrided Layer Structure and Surface Pressures on Its Wear Resistance by Friction
Wang et al.	1996	Control and use of residual austenitic morphology in high-carbon steel
Kanetake	1987	Application technology of plasma nitriding
Manory et al.	1986	Cold Plasma Processes for Coating Metal Surfaces
Taguchi	1988	Surface Treatment of Aluminum or Its Alloy
Wang	1987	Toughening Treatment of Fe--8 Mn--0. 1 C Ferritic Steel
Lin et al.	1983	The Formation of Boronized Layer and Its Preferred Orientation in a Medium-Carbon Steel
Dawes et al.	1987	Corrosion Resistant Steel Components and Method of Manufacture
Yamazaki	1986	Adhesion in Plastic Lining
Druga	1985	The Structure of a Low Pressure Carburized Layer
JPS56158819A (en)	1981-12-07	Manufacture of cold rolled plate of austenite stainless steel with fine surface luster and high corrosion resistance
JPS5741396A (en)	1982-03-08	Production of pb-sn alloy plated steel plate
Lu et al.	1987	Boro-Carbonitriding for Improving the Nature of Boriding Layer
Vladimirova et al.	1996	Improving cutting properties of steel tool with diamond-like coating, prepared by graphite pulse spraying
Imai et al.	1985	On the Surface Layers of Ion Nitrided 430 Stainless Steel

Legal Events

Date

Code

Title

Description

1993-09-30

FG3A

Patent granted, date of granting

Effective date: 19930305

1994-02-28

PD3A

Change of proprietorship

1999-01-29

MM3A

Annulment or lapse

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 19980930