JUNCTION, DETECTOR FOR INFRARED GAS ANALYZER, INFRARED GAS ANALYZER, AND METHOD FOR MANUFACTURING JUNCTION

To provide a junction with high airtightness in which there is no crack in a glass member and a metal member, the junction between dissimilar materials difficult to absorb corrosive gas such sulfur dioxide gas.SOLUTION: Provided are a junction, a detector for an infrared gas analyzer comprising the junction, an infrared gas analyzer, and a method for manufacturing the junction, the junction comprising: a glass member 1 comprising a metal lamination part including a first layer 2 and a second layer 3; a metal member 9 comprising a metal lamination part including a first layer 8 and a second layer 7; and a solder bonding layer 5 provided between the metal lamination part of the glass member and the metal lamination part of the metal member, where the first layer 2, 8 is a Cr layer or a Ti layer in contact with the glass member 1 or the metal member 9, the second layer 3, 7 is a Pt layer or a Ni layer in contact with the first layer 2, and the solder bonding layer 5 is a bonding layer in which a solder material containing Sn is melted.SELECTED DRAWING: Figure 1 【課題】 ガラス部材及び金属部材に割れが無く、気密性の高い接合部であって、二酸化硫黄ガスなどの腐食性ガスを吸収しにくい異種素材の接合部。【解決手段】 第１層２と、第２層３を含む金属積層部を備えるガラス部材１と、第１層８と、第２層７を含む金属積層部を備える金属部材９と、前記ガラス部材の金属積層部と、前記金属部材の金属積層部との間に設けられるはんだ接合層５とを備え、前記第１層２、８が、前記ガラス部材１または前記金属部材９に接するＣｒ層またはＴｉ層であり、前記第２層３、７が、前記第１層２に接するＰｔ層またはＮｉ層であり、前記はんだ接合層５が、Ｓｎを含有するはんだ材が溶融された接合層である、接合部、及びこれを備える赤外線ガス分析計用検出器、赤外線ガス分析計、並びに接合部の製造方法。【選択図】 図１