CA1323777C - Nickel-chromium alloy of improved fatigue strength - Google Patents
Nickel-chromium alloy of improved fatigue strengthInfo
- Publication number
- CA1323777C CA1323777C CA000544654A CA544654A CA1323777C CA 1323777 C CA1323777 C CA 1323777C CA 000544654 A CA000544654 A CA 000544654A CA 544654 A CA544654 A CA 544654A CA 1323777 C CA1323777 C CA 1323777C
- Authority
- CA
- Canada
- Prior art keywords
- alloy
- nitrogen
- carbon
- silicon
- nickel
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 title claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 26
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 24
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000010703 silicon Substances 0.000 claims abstract description 22
- 229910045601 alloy Inorganic materials 0.000 claims description 39
- 239000000956 alloy Substances 0.000 claims description 39
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 13
- 239000010955 niobium Substances 0.000 claims description 12
- 229910052804 chromium Inorganic materials 0.000 claims description 11
- 239000011651 chromium Substances 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 8
- 239000011733 molybdenum Substances 0.000 claims description 8
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 8
- 229910052758 niobium Inorganic materials 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 230000002596 correlated effect Effects 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052721 tungsten Inorganic materials 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 2
- 229910001182 Mo alloy Inorganic materials 0.000 abstract 1
- OGSYQYXYGXIQFH-UHFFFAOYSA-N chromium molybdenum nickel Chemical compound [Cr].[Ni].[Mo] OGSYQYXYGXIQFH-UHFFFAOYSA-N 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 239000000788 chromium alloy Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000003252 repetitive effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 101100066898 Mus musculus Flna gene Proteins 0.000 description 1
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/087—Heat exchange elements made from metals or metal alloys from nickel or nickel alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Heat Treatment Of Articles (AREA)
- Laminated Bodies (AREA)
- Conductive Materials (AREA)
- Chemically Coating (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Materials For Medical Uses (AREA)
- Resistance Heating (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Coating By Spraying Or Casting (AREA)
- Powder Metallurgy (AREA)
- Diaphragms And Bellows (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US897,746 | 1986-08-18 | ||
| US06/897,746 US4765956A (en) | 1986-08-18 | 1986-08-18 | Nickel-chromium alloy of improved fatigue strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1323777C true CA1323777C (en) | 1993-11-02 |
Family
ID=25408354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000544654A Expired - Fee Related CA1323777C (en) | 1986-08-18 | 1987-08-17 | Nickel-chromium alloy of improved fatigue strength |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4765956A (https=) |
| EP (1) | EP0259660B1 (https=) |
| JP (1) | JP2575399B2 (https=) |
| KR (1) | KR910001358B1 (https=) |
| AT (1) | ATE65263T1 (https=) |
| AU (1) | AU589027B2 (https=) |
| BR (1) | BR8704224A (https=) |
| CA (1) | CA1323777C (https=) |
| DE (1) | DE3771422D1 (https=) |
| IN (1) | IN169872B (https=) |
Families Citing this family (51)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4889696A (en) * | 1986-08-21 | 1989-12-26 | Haynes International, Inc. | Chemical reactor for nitric acid |
| US4814023A (en) * | 1987-05-21 | 1989-03-21 | General Electric Company | High strength superalloy for high temperature applications |
| US4787945A (en) * | 1987-12-21 | 1988-11-29 | Inco Alloys International, Inc. | High nickel chromium alloy |
| US5080734A (en) * | 1989-10-04 | 1992-01-14 | General Electric Company | High strength fatigue crack-resistant alloy article |
| FR2653451B1 (fr) * | 1989-10-20 | 1993-08-13 | Tecphy | Procede d'amelioration de la resistance a la corrosion d'un alliage a base de nickel et alliage ainsi realise. |
| JP2634103B2 (ja) * | 1991-07-12 | 1997-07-23 | 大同メタル工業 株式会社 | 高温用軸受合金およびその製造方法 |
| JPH05179379A (ja) * | 1992-01-08 | 1993-07-20 | Mitsubishi Materials Corp | Ｎｉ基合金圧延板製高温シール材 |
| DE4229599C1 (https=) * | 1992-09-04 | 1993-08-19 | Mtu Muenchen Gmbh | |
| US5660938A (en) * | 1993-08-19 | 1997-08-26 | Hitachi Metals, Ltd., | Fe-Ni-Cr-base superalloy, engine valve and knitted mesh supporter for exhaust gas catalyzer |
| SE513552C2 (sv) * | 1994-05-18 | 2000-10-02 | Sandvik Ab | Användning av en Cr-Ni-Mo-legering med god bearbetbarhet och strukturstabilitet som komponent i avfallsförbränningsanläggningar |
| GB2302551B (en) * | 1995-06-22 | 1998-09-16 | Firth Rixson Superalloys Ltd | Improvements in or relating to alloys |
| US5862800A (en) * | 1996-09-27 | 1999-01-26 | Boeing North American, Inc. | Molten nitrate salt solar central receiver of low cycle fatigue 625 alloy |
| US5827377A (en) * | 1996-10-31 | 1998-10-27 | Inco Alloys International, Inc. | Flexible alloy and components made therefrom |
| US5945067A (en) * | 1998-10-23 | 1999-08-31 | Inco Alloys International, Inc. | High strength corrosion resistant alloy |
| KR100431436B1 (ko) * | 1999-12-21 | 2004-05-14 | 재단법인 포항산업과학연구원 | 고효율의 레이들 가열 장치 |
| US20040156737A1 (en) * | 2003-02-06 | 2004-08-12 | Rakowski James M. | Austenitic stainless steels including molybdenum |
| DE10052023C1 (de) * | 2000-10-20 | 2002-05-16 | Krupp Vdm Gmbh | Austenitische Nickel-Chrom-Cobalt-Molybdän-Wolfram-Legierung und deren Verwendung |
| US6736134B2 (en) * | 2001-09-05 | 2004-05-18 | The Boeing Company | Thin wall header for use in molten salt solar absorption panels |
| JP3814822B2 (ja) * | 2002-03-08 | 2006-08-30 | 三菱マテリアル株式会社 | 高温熱交換器用フィンおよびチューブ |
| US6877508B2 (en) * | 2002-11-22 | 2005-04-12 | The Boeing Company | Expansion bellows for use in solar molten salt piping and valves |
| JP2005211303A (ja) * | 2004-01-29 | 2005-08-11 | Olympus Corp | 内視鏡 |
| CN101248197B (zh) * | 2005-01-25 | 2010-12-08 | 亨廷顿冶金公司 | 具有抗失延裂纹的药皮焊条及由此产生的堆焊 |
| CA2660107C (en) * | 2006-08-08 | 2015-05-12 | Huntington Alloys Corporation | Welding alloy and articles for use in welding, weldments and method for producing weldments |
| JP5248047B2 (ja) * | 2006-12-11 | 2013-07-31 | 株式会社アイチコーポレーション | 転倒防止装置 |
| US7985304B2 (en) * | 2007-04-19 | 2011-07-26 | Ati Properties, Inc. | Nickel-base alloys and articles made therefrom |
| JP5262423B2 (ja) * | 2008-08-21 | 2013-08-14 | セイコーインスツル株式会社 | ゴルフクラブヘッド、そのフェース部及びその製造方法 |
| US20130209262A1 (en) * | 2012-02-09 | 2013-08-15 | Daniel Edward Matejczyk | Method of manufacturing an airfoil |
| JP6068935B2 (ja) * | 2012-11-07 | 2017-01-25 | 三菱日立パワーシステムズ株式会社 | Ｎｉ基鋳造合金及びそれを用いた蒸気タービン鋳造部材 |
| US9540714B2 (en) | 2013-03-15 | 2017-01-10 | Ut-Battelle, Llc | High strength alloys for high temperature service in liquid-salt cooled energy systems |
| US9377245B2 (en) | 2013-03-15 | 2016-06-28 | Ut-Battelle, Llc | Heat exchanger life extension via in-situ reconditioning |
| US10017842B2 (en) | 2013-08-05 | 2018-07-10 | Ut-Battelle, Llc | Creep-resistant, cobalt-containing alloys for high temperature, liquid-salt heat exchanger systems |
| US9435011B2 (en) | 2013-08-08 | 2016-09-06 | Ut-Battelle, Llc | Creep-resistant, cobalt-free alloys for high temperature, liquid-salt heat exchanger systems |
| US20150068621A1 (en) * | 2013-09-09 | 2015-03-12 | Timothy Brian Conner | Medical Gas Manifold |
| US9683280B2 (en) | 2014-01-10 | 2017-06-20 | Ut-Battelle, Llc | Intermediate strength alloys for high temperature service in liquid-salt cooled energy systems |
| JP6197885B2 (ja) | 2014-01-27 | 2017-09-20 | 新日鐵住金株式会社 | Ｎｉ基耐熱合金用溶接材料ならびにそれを用いてなる溶接金属および溶接継手 |
| EP3126090B1 (en) * | 2014-04-04 | 2018-08-22 | Special Metals Corporation | High strength ni-cr-mo-w-nb-ti welding product and method of welding and weld deposit using the same |
| US9683279B2 (en) | 2014-05-15 | 2017-06-20 | Ut-Battelle, Llc | Intermediate strength alloys for high temperature service in liquid-salt cooled energy systems |
| US9605565B2 (en) | 2014-06-18 | 2017-03-28 | Ut-Battelle, Llc | Low-cost Fe—Ni—Cr alloys for high temperature valve applications |
| US10112254B2 (en) | 2014-08-21 | 2018-10-30 | Huntington Alloys Corporation | Method for making clad metal pipe |
| ITUA20163944A1 (it) * | 2016-05-30 | 2017-11-30 | Nuovo Pignone Tecnologie Srl | Process for making a component of a turbomachine, a component obtainable thereby and turbomachine comprising the same / Processo per ottenere un componente di turbomacchina, componente da esso ottenibile e turbomacchina che lo comprende |
| KR102016384B1 (ko) * | 2016-10-24 | 2019-08-30 | 다이도 토쿠슈코 카부시키가이샤 | 석출 경화형 고 Ni 내열합금 |
| US10577681B2 (en) * | 2017-07-06 | 2020-03-03 | General Electric Company | Nickel-iron-cobalt based alloys and articles and methods for forming articles including nickel-iron-cobalt based alloys |
| JP6723210B2 (ja) * | 2017-09-14 | 2020-07-15 | 日本冶金工業株式会社 | ニッケル基合金 |
| JP6911174B2 (ja) * | 2017-09-14 | 2021-07-28 | 日本冶金工業株式会社 | ニッケル基合金 |
| JP6839316B1 (ja) * | 2020-04-03 | 2021-03-03 | 日本冶金工業株式会社 | Ｎｉ−Ｃｒ−Ｍｏ−Ｎｂ系合金 |
| CN111455254B (zh) * | 2020-05-08 | 2021-09-21 | 华能国际电力股份有限公司 | 一种低成本易加工铁镍钴基高温合金及其制备方法 |
| CN117795110A (zh) * | 2021-07-09 | 2024-03-29 | 冶联科技地产有限责任公司 | 镍基合金 |
| CN114134367B (zh) * | 2021-10-20 | 2023-02-21 | 中国科学院金属研究所 | 一种牌号为mp-5的高强度耐氢脆膜片及制备方法 |
| CN114086031B (zh) * | 2021-10-20 | 2023-02-17 | 中国科学院金属研究所 | 一种高压氢压机膜片用耐疲劳耐氢脆板材的制备方法 |
| KR20250170047A (ko) | 2023-04-06 | 2025-12-04 | 에이티아이 프로퍼티즈 엘엘씨 | 니켈계 합금 |
| CN116656976A (zh) * | 2023-04-20 | 2023-08-29 | 河北大河材料科技有限公司 | 一种返回屑料制备高纯高温合金gh4169的方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1250642B (https=) * | 1958-11-13 | 1967-09-21 | ||
| US3160500A (en) * | 1962-01-24 | 1964-12-08 | Int Nickel Co | Matrix-stiffened alloy |
| US3843359A (en) * | 1973-03-23 | 1974-10-22 | Int Nickel Co | Sand cast nickel-base alloy |
| US4210447A (en) * | 1974-05-01 | 1980-07-01 | Unitek Corporation | Dental restorations using castings of non-precious metals |
| JPS52120913A (en) * | 1976-04-06 | 1977-10-11 | Kawasaki Heavy Ind Ltd | Heat treatment for improving high temperature low cycle fatigue strength of nickel base cast alloy |
| JPS5834129A (ja) * | 1981-08-21 | 1983-02-28 | Daido Steel Co Ltd | 耐熱金属材料の製造方法 |
| JPS60162760A (ja) * | 1984-02-06 | 1985-08-24 | Daido Steel Co Ltd | 高強度耐熱材料の製造方法 |
| IT1177871B (it) * | 1984-07-04 | 1987-08-26 | Enea | Perfezionamento nelle superleghe contenenti nichel per impieghi ad elevata temperatura |
-
1986
- 1986-08-18 US US06/897,746 patent/US4765956A/en not_active Expired - Lifetime
-
1987
- 1987-08-06 AU AU76633/87A patent/AU589027B2/en not_active Ceased
- 1987-08-10 IN IN572/MAS/87A patent/IN169872B/en unknown
- 1987-08-14 BR BR8704224A patent/BR8704224A/pt not_active Application Discontinuation
- 1987-08-14 JP JP62201994A patent/JP2575399B2/ja not_active Expired - Fee Related
- 1987-08-17 CA CA000544654A patent/CA1323777C/en not_active Expired - Fee Related
- 1987-08-17 KR KR1019870008995A patent/KR910001358B1/ko not_active Expired
- 1987-08-18 AT AT87111981T patent/ATE65263T1/de not_active IP Right Cessation
- 1987-08-18 DE DE8787111981T patent/DE3771422D1/de not_active Expired - Fee Related
- 1987-08-18 EP EP87111981A patent/EP0259660B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6350440A (ja) | 1988-03-03 |
| EP0259660A1 (en) | 1988-03-16 |
| ATE65263T1 (de) | 1991-08-15 |
| KR910001358B1 (ko) | 1991-03-04 |
| JP2575399B2 (ja) | 1997-01-22 |
| BR8704224A (pt) | 1988-04-12 |
| DE3771422D1 (de) | 1991-08-22 |
| AU589027B2 (en) | 1989-09-28 |
| IN169872B (https=) | 1992-01-04 |
| US4765956A (en) | 1988-08-23 |
| EP0259660B1 (en) | 1991-07-17 |
| KR880003022A (ko) | 1988-05-13 |
| AU7663387A (en) | 1988-02-25 |
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