On Evil Twins and Their Absent Friends

Müller, Carola

On Evil Twins and Their Absent Friends

Mark

Müller, Carola ^LU (2015)

Abstract: Knowledge on intermetallic compounds and alloys is essential for technology leaps. The latest of these, the so-called digital revolution, started the period of the information age which is characterized by fast information transfer. The constant development of faster and smaller electronic devices comes with the drawback of increased amounts of waste, meaning products that used to by high-end technology. Unsurprisingly, not all parts of an electronic device are

recyclable, and some of the intermetallic compounds and alloys are in fact hazardous to the environment. For this reason, bans and restrictions on hazardous materials in electronic devices have been put into legislation in some countries over the past ten years, also in... (More); Knowledge on intermetallic compounds and alloys is essential for technology leaps. The latest of these, the so-called digital revolution, started the period of the information age which is characterized by fast information transfer. The constant development of faster and smaller electronic devices comes with the drawback of increased amounts of waste, meaning products that used to by high-end technology. Unsurprisingly, not all parts of an electronic device are

recyclable, and some of the intermetallic compounds and alloys are in fact hazardous to the environment. For this reason, bans and restrictions on hazardous materials in electronic devices have been put into legislation in some countries over the past ten years, also in the European Union.

The direct consequence of these regulations is that the substitution of the affected metals with others created new interdisciplinary research fields as traditional materials like lead-containing solders are not allowed any longer. The here presented work is not directed towards finding new solder or semiconductor materials. The idea behind is to find and characterize ternary intermetallic compounds that are formed when metal-metal contacts are present in electronic devices. Besides chemical characterization techniques, crystallographic methods such as X-ray diffraction are employed to determine the crystal structure of the novel compounds. This is of particular importance for technical applications as the properties of any given intermetallic compound can neither be understood nor predicted without the knowledge on its crystal structure. (Less)
Abstract (Swedish): Popular Abstract in Swedish

Kunskap om intermetalliska föreningar och legeringar är avgörande för tekniksprång. Den senaste av dessa, den så kallade digitala revolutionen, började perioden för informationsåldern som kännetecknas av snabb informationsöverföring. Den ständiga utvecklingen av snabbare och mindre elektroniska apparater kommer med nackdelen av ökade mängder avfall, vilket innebär produkter som används för att genom avancerad teknik. Föga förvånande, inte alla delar av en elektronisk anordning är återvinningsbara, och vissa av de intermetalliska föreningarna och legeringar är i själva verket skadlig för miljön. Av denna anledning förbud och restriktioner för farligt material i elektroniska apparater har satts i... (More); Popular Abstract in Swedish

Kunskap om intermetalliska föreningar och legeringar är avgörande för tekniksprång. Den senaste av dessa, den så kallade digitala revolutionen, började perioden för informationsåldern som kännetecknas av snabb informationsöverföring. Den ständiga utvecklingen av snabbare och mindre elektroniska apparater kommer med nackdelen av ökade mängder avfall, vilket innebär produkter som används för att genom avancerad teknik. Föga förvånande, inte alla delar av en elektronisk anordning är återvinningsbara, och vissa av de intermetalliska föreningarna och legeringar är i själva verket skadlig för miljön. Av denna anledning förbud och restriktioner för farligt material i elektroniska apparater har satts i lagstiftningen i vissa länder under de senaste tio åren, även i Europeiska unionen.

Den direkta följden av dessa regler är att ersätta de drabbade metaller nya tvärvetenskapliga forskningsfält med andra skapas som traditionella material som bly i lödtenn är inte tillåtna längre. Den här presenterade avhandling riktar sig inte att finna nya löda eller halvledarmaterial. Tanken bakom är att hitta och karakterisera intermetalliska föreningar som bildas när metall-metallkontakter är närvarande i elektroniska enheter. Förutom kemiska karakteriseringstekniker användes kristallografiska metoder såsom röntgendiffraktion för att bestämma kristallstrukturer hos de nya föreningarna. Detta är av särskild betydelse för tekniska tillämpningar som egenskaperna hos varje given intermetallisk förening varken kan förstås eller förutspås utan kunskap om dess kristallstruktur. (Less)

Please use this url to cite or link to this publication: https://lup.lub.lu.se/record/5276173

author

Müller, Carola ^LU

supervisor

Sven Lidin ^LU

opponent

Brummerstedt Iversen, Bo, Aarhus University

organization

Centre for Analysis and Synthesis

publishing date

2015

type

Thesis

publication status

published

subject

Engineering and Technology

keywords

intermetallic compounds, structure chemistry, lead-free electronics

defense location

Lecture hall F, Kemicentrum, Getingevägen 60, Lund University, Faculty of Engineering LTH, Lund

defense date

2015-05-13 10:15:00

ISBN

978-91-7422-400-9

language

English

LU publication?

yes

id

895bead4-c070-4c38-b12a-68095596c2c6 (old id 5276173)

date added to LUP

2016-04-04 13:52:37

date last changed

2018-11-21 21:16:53

@phdthesis{895bead4-c070-4c38-b12a-68095596c2c6,
  abstract     = {{Knowledge on intermetallic compounds and alloys is essential for technology leaps. The latest of these, the so-called digital revolution, started the period of the information age which is characterized by fast information transfer. The constant development of faster and smaller electronic devices comes with the drawback of increased amounts of waste, meaning products that used to by high-end technology. Unsurprisingly, not all parts of an electronic device are <br/><br>
recyclable, and some of the intermetallic compounds and alloys are in fact hazardous to the environment. For this reason, bans and restrictions on hazardous materials in electronic devices have been put into legislation in some countries over the past ten years, also in the European Union.<br/><br>
The direct consequence of these regulations is that the substitution of the affected metals with others created new interdisciplinary research fields as traditional materials like lead-containing solders are not allowed any longer. The here presented work is not directed towards finding new solder or semiconductor materials. The idea behind is to find and characterize ternary intermetallic compounds that are formed when metal-metal contacts are present in electronic devices. Besides chemical characterization techniques, crystallographic methods such as X-ray diffraction are employed to determine the crystal structure of the novel compounds. This is of particular importance for technical applications as the properties of any given intermetallic compound can neither be understood nor predicted without the knowledge on its crystal structure.}},
  author       = {{Müller, Carola}},
  isbn         = {{978-91-7422-400-9}},
  keywords     = {{intermetallic compounds; structure chemistry; lead-free electronics}},
  language     = {{eng}},
  school       = {{Lund University}},
  title        = {{On Evil Twins and Their Absent Friends}},
  url          = {{https://lup.lub.lu.se/search/files/6226262/5276199.pdf}},
  year         = {{2015}},
}

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On Evil Twins and Their Absent Friends