CH209689A

CH209689A - Alloy.

Info

Publication number: CH209689A
Authority: CH
Inventors: Limited British Driver Company; Marriott Kay William
Original assignee: British Driver Harris Co Ltd; Marriott Kay William
Priority date: 1937-12-10
Filing date: 1938-12-07
Publication date: 1940-04-30

Description

  

  Alliage.    La présente invention a pour objet un  alliage utilisable notamment pour la     àbri-          cation    de fils de résistances électriques et  d'autres articles qui sont destinés<B>à</B> être ex  posés<B>à</B> l'action de l'air ambiant alors qu'ils  sont<B>à</B> haute température. L'alliage faisant  l'objet de l'invention est caractérisé en ce  qu'il comprend<B>10<I>à</I></B>     301'o    de chrome,<B>0,01</B>  <B>à</B>     -')%    de thorium et<B>0,25 à 3%</B> de silicium,  le reste étant constitué, au moins pour envi  ron la moitié, par du nickel.  



  L'alliage peut comprendre, par exemple,  <B>10 à 30%</B> de chrome,<B>0,01 à</B> 2% de thorium,  et<B><U>0,25</U> à 3%</B> de silicium, le solde étant cons  titué par du nickel. Le<B>50</B>     70    au plus de ce  solde peut aussi être constitué par du fer,       du    encore par du fer et du tungstène (le  pourcentage de ce dernier dans l'alliage al  lant jusqu'à<B>10),</B> par du fer et du     molyb-          dùne    (le pourcentage de ce dernier allant       j        Lisqu'à   <B>10),</B> par du fer et du cobalt<B>( '</B> le pour  centage de ce dernier allant jusqu'à<B>10) on</B>    par du fer et du manganèse, zirconium,

   alu  minium ou urane     (.le    pourcentage     #du        mauga-          nèse,    du zirconium, de l'aluminium ou de       Furane    allant jusqu'à 2).  



  Le solde mentionné peut aussi compren  dre, par exemple, au moins un métal de terre  rare, tel que le cérium, en quantité allant de  <B>0,01<I>à</I></B>     19o'        et/ou    au moins un métal     alcalino-          terreux,    tel que le calcium, en quantité al  lant; de<B>0,01 à 0,5 %.</B> Ce solde peut encore  comprendre une adjonction de<B>0,01 à 0,5%</B>  de magnésium, pour la     désoxydation,        et/ou     <B>0,01 à 1 %</B> de zirconium.  



  L'emploi combiné du thorium et du sili  cium donne des résultats bien meilleurs com  parativement<B>à</B> l'emploi du thorium seul, et  cet emploi combiné du thorium et du sili  cium soit avec un métal de terre rare, soit  avec un métal alcalino-terreux donne une  amélioration saillante des résultats.  



  Les exemples suivants montrent l'effet  des diverses adjonctions. La première com-      position n'est donnée que pour comparaison.  Les données en heures indiquent la durée de  vie d'un échantillon de fil de<B>0,63</B> mm de  diamètre, lorsqu'il est essayé selon la mé  thode de     Bash    et     Ilarsh,    avec une tempéra  ture de départ de<B>1.175 ' C,</B> tous les essais    ayant<B>été</B> exécutés dans des conditions     sein-          blables.     



  <B>A</B> un métal de base contenant     805vo    de  nickel et '20<B>%</B> de chrome, on a ajouté les  corps suivants et on a obtenu les durées de  vie indiquées en heures en regard des corps  ajoutés:  
EMI0002.0006     
  
    Exemples
<tb>  No. <SEP> Adjonctions <SEP> Durée <SEP> <B>de</B> <SEP> vie
<tb>  <B>1</B> <SEP> thorium <SEP> 0,25% <SEP> <B>38</B> <SEP> heures
<tb>  2 <SEP> thorium <SEP> <B>0,2) <SEP> 5 <SEP> %,</B> <SEP> silicium <SEP> <B>1 <SEP> % <SEP> 123</B> <SEP> heures
<tb>  <B>3</B> <SEP> thorium <SEP> <B>0,25%,</B> <SEP> silicium <SEP> <B>1 <SEP> %</B>
<tb>  calcium <SEP> <B>0,15%</B> <SEP> 242 <SEP> heures
<tb>  4 <SEP> thorium <SEP> <B>0,</B> <SEP> 2 <SEP> <B>5</B> <SEP> j"o" <SEP> <B>,</B> <SEP> silicium <SEP> <B>1 <SEP> %</B>
<tb>  calcium <SEP> <B>0,15%,</B> <SEP> zirconium <SEP> <B>0,

  25 <SEP> %</B> <SEP> 244 <SEP> heures
<tb>  <B>à</B> <SEP> thorium <SEP> 0,25%, <SEP> silicium <SEP> <B>1 <SEP> %</B>
<tb>  calcium <SEP> <B>0, <SEP> 15 <SEP> /'0,</B> <SEP> urane <SEP> <B>0,5% <SEP> 263</B> <SEP> heures
<tb>  <B>6</B> <SEP> thorium <SEP> 0,125%, <SEP> silicium <SEP> <B>1</B> <SEP> <I>%'</I>
<tb>  cérium <SEP> 0,125%, <SEP> magnésium <SEP> <B>0,125% <SEP> 279</B> <SEP> heures



  Alloy. The present invention relates to an alloy which can be used in particular for the embedding of wires for electrical resistances and other articles which are intended <B> for </B> to be exposed <B> to </B> the action. ambient air while they are <B> at </B> high temperature. The alloy forming the subject of the invention is characterized in that it comprises <B> 10 <I> to </I> </B> 301'o of chromium, <B> 0.01 </ B > <B> to </B> - ')% thorium and <B> 0.25 to 3% </B> silicon, the remainder being constituted, at least for about half, of nickel.



  The alloy can include, for example, <B> 10 to 30% </B> chromium, <B> 0.01 to </B> 2% thorium, and <B> <U> 0.25 < / U> 3% </B> silicon, the balance being nickel. The <B> 50 </B> 70 at most of this balance can also be constituted by iron, still by iron and tungsten (the percentage of the latter in the alloy up to <B> 10 ), </B> by iron and molyb- dùne (the percentage of the latter going up to <B> 10), </B> by iron and cobalt <B> ('</B> the percentage of the latter going up to <B> 10) on </B> by iron and manganese, zirconium,

   alu minium or uranium (the percentage # of mauganesese, zirconium, aluminum or furan up to 2).



  The mentioned balance may also include, for example, at least one rare earth metal, such as cerium, in an amount ranging from <B>0.01<I> to</I> </B> 19o 'and / or at least one alkaline earth metal, such as calcium, in an al lant amount; from <B> 0.01 to 0.5%. </B> This balance may also include an addition of <B> 0.01 to 0.5% </B> of magnesium, for deoxidation, and / or <B> 0.01 to 1% </B> zirconium.



  The combined use of thorium and silicon gives much better results compared to <B> </B> the use of thorium alone, and this combined use of thorium and silicon is with a rare earth metal, either with an alkaline earth metal gives a salient improvement of the results.



  The following examples show the effect of the various additions. The first composition is given for comparison only. Data in hours indicates the life of a sample of wire <B> 0.63 </B> mm in diameter, when tested according to the Bash and Ilarsh method, with a starting temperature of <B> 1.175 'C, </B> all tests which have <B> been </B> carried out under conceivable conditions.



  <B> A </B> a base metal containing 805vo of nickel and '20 <B>% </B> of chromium, the following bodies were added and the lifetimes indicated in hours with regard to the added bodies:
EMI0002.0006
  
    Examples
<tb> No. <SEP> Additions <SEP> Duration <SEP> <B> of </B> <SEP>
<tb> <B> 1 </B> <SEP> thorium <SEP> 0.25% <SEP> <B> 38 </B> <SEP> hours
<tb> 2 <SEP> thorium <SEP> <B> 0.2) <SEP> 5 <SEP>%, </B> <SEP> silicon <SEP> <B> 1 <SEP>% <SEP> 123 </B> <SEP> hours
<tb> <B> 3 </B> <SEP> thorium <SEP> <B> 0.25%, </B> <SEP> silicon <SEP> <B> 1 <SEP>% </B>
<tb> calcium <SEP> <B> 0.15% </B> <SEP> 242 <SEP> hours
<tb> 4 <SEP> thorium <SEP> <B> 0, </B> <SEP> 2 <SEP> <B> 5 </B> <SEP> j "o" <SEP> <B>, < / B> <SEP> silicon <SEP> <B> 1 <SEP>% </B>
<tb> calcium <SEP> <B> 0.15%, </B> <SEP> zirconium <SEP> <B> 0,

  25 <SEP>% </B> <SEP> 244 <SEP> hours
<tb> <B> to </B> <SEP> thorium <SEP> 0.25%, <SEP> silicon <SEP> <B> 1 <SEP>% </B>
<tb> calcium <SEP> <B> 0, <SEP> 15 <SEP> / '0, </B> <SEP> urane <SEP> <B> 0.5% <SEP> 263 </B> < SEP> hours
<tb> <B> 6 </B> <SEP> thorium <SEP> 0.125%, <SEP> silicon <SEP> <B> 1 </B> <SEP> <I>% '</I>
<tb> cerium <SEP> 0.125%, <SEP> magnesium <SEP> <B> 0.125% <SEP> 279 </B> <SEP> hours

Claims

CLAIM: Alloy, usable in particular for the manufacture of electric resistance wires, characterized in that it comprises 10 to 30% ' of chromium, 0.01 to 2 / Io of thorium, and 0.25 to 3% of silicon, the balance consisting of at least for about half, by nickel. SUB-CLAIMS - 1 Alloy according to claim, characterized in that it comprises iron in a proportion at most equal to that of nickel. Alloy according to claim and sub-claim 1, characterized in that it further comprises tungsten, in an amount not greater than 10% of the alloy.

3 Alloy according to claim and sub-claim 1, characterized in that it further comprises molybdenum, in an amount not greater than than 10% of the alloy. èn 4 Alloy according to. Claim and sub-claim 1, characterized in that it further comprises cobalt, in an amount not greater than 10% of the alloy.

5 Alloy according to claim and sub-claim 1, characterized in that it further comprises manganese. in quantity not greater than than _9% of the alloy. 6 Alloy according to claim and sub-claim 1, characterized in that it further comprises zirconium, in an amount not greater than to 2% of the alloy.

7 Alloy according to claim and sub-claim 1, characterized in that it further comprises aluminum. in an amount not greater than than 2% of the alloy. 8 Alloy according to claim and sub-claim 1, characterized in that it further comprises Furan, in an amount not greater than than 9% of the alloy. 9 Alloy according to claim, characterized in that it comprises from 0.01 to 2% of a rare earth metal.

10 Alloy according to claim and sub-claim 9, characterized in that the rare earth metal is cerium. It Alloy according to claim, characterized in that it comprises from 0.01 to 0.5% of an alkaline metal earthy. 12 Alloy according to claim and sub- claim 11, characterized in that the alkaline earth metal is calcium. 102 Alloy according to claim and subclaims 9 and II. 14 Alloy according to claim, characterized in that it comprises 0.01 to 1% zirconium.

there Alloy according to claim, characterized in that it comprises 0.05 to 0.5% of magnesium. 16 Alloy according to claim, characterized in that it comprises 0.25% of thorium and 1% of silicon, the nickel and chromium constituting the remainder, and being in the proportion of 80 of the first to 20 of the second. 17 Alloy according to claim, characterized in that it comprises 0.25% thorium, 1% silicon and 0.15% of calium. 18 Alloy according to claim, characterized in that it comprises 0.25% thorium, 1% silicon, 0.15% calcium and 0.25% zirconium.

19 Alloy according to claim, characterized in that it comprises 0.25% thorium, 1% silicon, 0.15% calcium and 0.5% of uranium. 20 Alloy according to claim, characterized in that it comprises 0.125% thorium, 1% silicon, 0.125% cerium and 0.125% magnesium.