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Effect of Non-Uniform Temperature Field on Sintering Performance of Conductive Silver Paste in Laser Sintering.

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Title: Effect of Non-Uniform Temperature Field on Sintering Performance of Conductive Silver Paste in Laser Sintering.
Authors: Zu, Wenkai1 (AUTHOR), Xiao, Xingzhi1 (AUTHOR) xingzhi.xiao@njust.edu.cn, Liu, Tingting1 (AUTHOR), Gu, Mingfei1 (AUTHOR), Li, Gang1 (AUTHOR), Liao, Wenhe1 (AUTHOR)
Source: Materials (1996-1944). May2025, Vol. 18 Issue 10, p2358. 19p.
Subjects: Laser sintering, Inductive effect, Sintering, Temperature effect, Quantitative research
Abstract: The non-uniform temperature field in laser sintering critically affects conductive silver paste performance, yet its quantitative relationship with sintering mechanisms remains unclear. This study addresses this issue by proposing effective sintering temperature (Ta) and effective sintering time (Sa) as metrics to link laser parameters and sintering temperature field with sintering performance. Through full-factorial experiments, finite element simulation, and in situ thermal monitoring, it was revealed that (1) Increasing laser power and reducing laser scanning speed effectively reduce resistivity. For example, at 10 W and 0.1 mm/s, the resistivity reached 6.81 μΩ·cm, which was 88.9% lower than the value of 61.11 μΩ·cm at 2 W and 0.5 mm/s. (2) The resistivity exhibits a threshold effect in its reduction across low-power (<3 W), medium-power (3~4 W), and high-power (>5 W) ranges. (3) The action of laser sintering parameters on sintering performance through Ta and Sa. The resistivity decreases are correlated with Ta, exceeding the exothermic peaks (T1 = 196 °C and T2 = 232 °C). Unlike prior qualitative analyses, this work quantifies how non-uniform temperature fields govern sintering through Ta and Sa, offering a quantitative method to analyze the temperature field's effect on sintering performance. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Effect of Non-Uniform Temperature Field on Sintering Performance of Conductive Silver Paste in Laser Sintering.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Materials+%281996-1944%29%22&quot;&gt;Materials (1996-1944)&lt;/searchLink&gt;. May2025, Vol. 18 Issue 10, p2358. 19p.
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Laser+sintering%22&quot;&gt;Laser sintering&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Inductive+effect%22&quot;&gt;Inductive effect&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Sintering%22&quot;&gt;Sintering&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Temperature+effect%22&quot;&gt;Temperature effect&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Quantitative+research%22&quot;&gt;Quantitative research&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The non-uniform temperature field in laser sintering critically affects conductive silver paste performance, yet its quantitative relationship with sintering mechanisms remains unclear. This study addresses this issue by proposing effective sintering temperature (Ta) and effective sintering time (Sa) as metrics to link laser parameters and sintering temperature field with sintering performance. Through full-factorial experiments, finite element simulation, and in situ thermal monitoring, it was revealed that (1) Increasing laser power and reducing laser scanning speed effectively reduce resistivity. For example, at 10 W and 0.1 mm/s, the resistivity reached 6.81 μΩ&#183;cm, which was 88.9% lower than the value of 61.11 μΩ&#183;cm at 2 W and 0.5 mm/s. (2) The resistivity exhibits a threshold effect in its reduction across low-power (&lt;3 W), medium-power (3~4 W), and high-power (&gt;5 W) ranges. (3) The action of laser sintering parameters on sintering performance through Ta and Sa. The resistivity decreases are correlated with Ta, exceeding the exothermic peaks (T1 = 196 &#176;C and T2 = 232 &#176;C). Unlike prior qualitative analyses, this work quantifies how non-uniform temperature fields govern sintering through Ta and Sa, offering a quantitative method to analyze the temperature field&#39;s effect on sintering performance. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: &lt;i&gt;Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
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        Value: 10.3390/ma18102358
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 19
        StartPage: 2358
    Subjects:
      – SubjectFull: Laser sintering
        Type: general
      – SubjectFull: Inductive effect
        Type: general
      – SubjectFull: Sintering
        Type: general
      – SubjectFull: Temperature effect
        Type: general
      – SubjectFull: Quantitative research
        Type: general
    Titles:
      – TitleFull: Effect of Non-Uniform Temperature Field on Sintering Performance of Conductive Silver Paste in Laser Sintering.
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          Name:
            NameFull: Zu, Wenkai
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            NameFull: Xiao, Xingzhi
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            NameFull: Li, Gang
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            – D: 15
              M: 05
              Text: May2025
              Type: published
              Y: 2025
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              Value: 18
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